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Individual Calculations September 2009 |
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| Hughes, Devin L Total change: 34.25 | |   |
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| 37th Annual World Open - Open Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2199 | 2011 | 2.00 | 6 | 0.32 | 25 | 8.00 | |
|  Enkhbat, Tegshsuren | m | | 2361 | USA | 0.00 | 1 | -0.11 | 25 | -2.75 | |  Peng, David | | | 2245 | CAN | 0.50 | 1 | 0.29 | 25 | 7.25 | | | Liu, Elliott J | f | | 2353 | USA | 0.00 | 1 | -0.12 | 25 | -3.00 | | | Reichstein, Boris | f | | 2152 | USA | 0.50 | 1 | 0.19 | 25 | 4.75 | | | Hanken, Jerome B | | | 1910 | USA | 0.50 | 1 | -0.14 | 25 | -3.50 | | | Privman, Boris | f | | 2172 | USA | 0.50 | 1 | 0.21 | 25 | 5.25 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | NOTE: K factor changed | | 64th OCF Oklahoma Open - Jerry Spann Memorial | Bricktown, Oklahoma | USA | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2096 | 2052 | 1.50 | 3 | 0.18 | 15 | 2.70 | |
| | Temple, Judson | | | 1901 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Braunlich, Tom | | | 2176 | USA | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Coleman, Maxx | | | 2212 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | NOTE: K factor changed | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2167 | 2052 | 4.00 | 7 | 1.57 | 15 | 23.55 | |
| | Bidwell, John C | | | 2258 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Ng, Andrew | | | 2113 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Sandberg, Evan M | | | 2146 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Yu, Corbin Zachary | | | 2207 | USA | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Murthy, Pappu | | | 2102 | USA | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Mills, James A | | | 2152 | USA | 1.00 | 1 | 0.64 | 15 | 9.60 | | | Wright, William B | | | 2188 | USA | 0.50 | 1 | 0.18 | 15 | 2.70 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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